function seeDoctor(message) {
  console.log("医生了解病情...");

  return "sick";
}

function pickDrug(sick){
    if(sick =='sick'){
        setTimeout(function () {
           console.log('取药中....')
        },3000)
    }
}


function seeDoctor2(){
    console.log('进一步了解病情！')
}

module.exports={
    seeDoctor,
    pickDrug,
    seeDoctor2
}
